Mailman 3 January 2021 - Twisted

[Twisted-Python] Buildbot downtime
by Tom Prince 03 Mar '22

03 Mar '22

I am plannig to upgrade twisted's buildbot in the near future. In preperation for that, I am going to take down the production buildbot on Tuesday, June 26, around 1600 UTC[1]. During that time, the result of any builds done will be lost. Thus, I'd ask that people avoid committing to trunk during that time. I will send a reminder before I take down the buildbot both here, and on #twisted and #twisted-dev. Tom [1] http://timeanddate.com/worldclock/meetingtime.html?iso=20120626&p1=80&p2=22…

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[Twisted-Python] Weekly Bug Summary
by trac＠twistedmatrix.com 27 Oct '21

27 Oct '21

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[Twisted-Python] Twisted Python 0.7.0 Prerelease Testing
by Glyph Lefkowitz 06 Aug '21

06 Aug '21

hi there, folks: I'd really like to release 0.7.0 but I would like it to be at least a little bit tested before I do so. Could those of you with CVS trees check everything out and see if it performs as advertised? Deeper bugs than that will have to wait for the next release, but I'd at least like to know if it works for someone other than me. Thanks. ______ __ __ _____ _ _ | ____ | \_/ |_____] |_____| |_____| |_____ | | | | @ t w i s t e d m a t r i x . c o m http://www.twistedmatrix.com/~glyph/

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[Twisted-Python] reactor for Linux io_uring
by Ian Haywood 13 Mar '21

13 Mar '21

In investigating async file I/O I came across this. In a nutshell it's the new epoll() It's marginally more efficient although this is only apparent at very high loads. What's more interesting is that io_uring accepts files as well as network/pipe handles: avoiding the need for threads. Here's a good intro: https://unixism.net/loti/index.html If people think an IoUringReactor is worthwhile I'll open a ticket and make a start. However it will need a reviewer... :-) Ian

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[Twisted-Python] code contribution/participation policy
by Boris Epstein 10 Mar '21

10 Mar '21

Hi all, I have started working with Twisted and found it to be a very powerful package. That said, some modules are not documented very thoroughly (big surprise in the world of software, right?) and I also found some questionable code, too. If I were to contribute fixes/improvements, what is the submission procedure? Thanks. Boris.

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[Twisted-Python] Upcoming Twisted Release
by Adi Roiban 02 Feb '21

02 Feb '21

Hi, I plan to act as a release manager for the next release and follow the plan documented at https://docs.twistedmatrix.com/en/latest/core/development/policy/release-pr… --------- The plan is to push the release candidate only on PyPI and to host the release candidate documentation (including pydoctor generated API docs) only on Read the Docs site. The Twisted Wiki Download page was updated to inform that PyPI is the only server where we publish the latest versions. So release candidates and final releases will be pushed only to PyPI. https://twistedmatrix.com/trac/wiki/Downloads While the release candidate documentation in only published on Read The Docs, at least for the next release I plan to also publish the documentation to: * https://twistedmatrix.com/documents/current/ * https://twistedmatrix.com/documents/VERSION/ After the release we can see if we can redirect them to Read The Docs. ---------------- For now, the only release blocker are the missing intersphinx API links on Read The Docs between the narrative docs and apidocs, but that is on track to be solved by next week. So no other tickets are in the blocker queue: https://twistedmatrix.com/trac/report/26 ------ Do you know any other release blocker issues? Since we have good continuous testing, maybe we can stop doing release candidates. The only thing blocking a release would be a "release blocket" ticket and truck CI checks not being green. Cheers -- Adi Roiban

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[Twisted-Python] Weekly Bug Summary
by trac＠twistedmatrix.com 31 Jan '21

31 Jan '21

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[Twisted-Python] Thread Cancelled
by Robert DiFalco 26 Jan '21

26 Jan '21

Hi, I apologize this question is a little vague. I'm looking for pointers. I have a klein route that makes an underlying deferToThread call with a simple single thread (an IO based sync call I can't change, a boto3 sqs write). The thread pool is simple, just a couple of threads, nothing fancy. VERY rarely it appears that Klein cancels the thread. What techniques can I use to figure out why my thread is being Canceled? There's nothing in the failure to tell me "who, why, or where" it was canceled. Also, I cannot get this down to a reproducible case, but here's the boto3 sqs wrapper, this fall back works fine, but it's a band-aide for an error I can't track down.: def write(self, payload): """ Write message to SQS async from thread pool. If twisted cancels the thread, instead write synchronously. def _retrySynchronously(error): if error.type != CancelledError: return error log.warn("Async SQS write cancelled. Calling synchronously.") return defer.succeed(self._writeSyncFallback(payload)) deferredCall = self._deferToThread(self.sqs.write, payload) deferredCall.addErrback(_retrySynchronously) return deferredCall def _writeSyncFallback(self, payload): return self.sqs.write(payload) The _deferToThread call just uses my own thread pool with 2 threads, but is otherwise stock. Is there a level of logging I'm missing or some other thing that would tell me why the thread is being canceled? The retry works great and Klein does not return an error from the route. Thanks in advance.

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[Twisted-Python] Questions about Project Leadership committee
by Craig Rodrigues 25 Jan '21

25 Jan '21

Hi, I asked some questions about the Twisted project leadership committee here: https://twistedmatrix.com/pipermail/twisted-python/2020-December/065367.html but it looks like my questions got lost in the thread, and no one aso I will ask again. Who are the current members of the committee? What are the titles/roles/responsibilities of the current committee members? Is there a mailing list, IRC channel, or some other venue which the current committee members belong to so that they can communicate amongst themselves, and also with the outside world, such as the Software Freedom Conservancy? -- Craig

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[Twisted-Python] Weekly Bug Summary
by trac＠twistedmatrix.com 24 Jan '21

24 Jan '21

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Twisted January 2021